body{
    background‐color: #eee;
}
#img1{
    transition:All 0.6s ease-in-out;
    ‐webkit‐transition:All 0.6s ease‐in‐out;
    ‐moz‐transition:All 0.6s ease‐in‐out;
    ‐o‐transition:All 0.6s ease‐in‐out;
    ‐ms‐transition:All 0.6s ease‐in‐out;
}
#img1:hover{
    transform:rotate(360deg);
    ‐webkit‐transform:rotate(360deg);
    ‐moz‐transform:rotate(360deg);
    ‐o‐transform:rotate(360deg);
    ‐ms‐transform:rotate(360deg);
}